2009.10.29
Šarūnas Burdulis
Department of Mathematics
Dartmouth College
Intel Core Duo low voltage processor L2300 (1.50GHz, 2MB L2, 667MHz
FSB)
1GB RAM (2 NonParity DDR2 SDRAM SoDIMM PC2-5300)
Intel Graphics Media Accelerator 950
12.1 inch XGA (1024x768) (Lenovo LTN121XJ-L07)
40GB 5400rpm Serial ATA (Toshiba MK4032GSX)
USB 2.0 CD-RW/DVD-ROM Combo Drive
Intel PRO/1000 Gigabit Ethernet
Intel PRO/Wireless 3945ABG
Firewire
SD Card Reader
56K V.92 Modem
$ lspci 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02) 00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02) 00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02) 02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller 03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) 15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev b4) 15:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 09) 15:00.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 18)
Boot time is 23s (from Grub entry selection to GDM login screen).
Sound works as long as modem is not disabled in BIOS.
Due to bug(s) in network-manager-gnome (NM applet) it is not possible to connect to WPA2 Enterprise TLS secure wireless networks. NM applet fails to read user's certificate. Connection is still possible using wpa-supplicant from the command line. See bug no. 445487 in Launchpad.
Just after the install, running on fully charged (but quite old) battery, screen auto-dimmed and WiFi connected to access point with 80% signal strength, PowerTOP reports 14.6W:
# powertop --dump PowerTOP 1.11 (C) 2007, 2008 Intel Corporation Collecting data for 15 seconds Cn Avg residency C0 (cpu running) ( 1.1%) C0 0.0ms ( 0.0%) C1 halt 0.0ms ( 0.0%) C2 0.1ms ( 0.0%) C3 12.4ms (98.9%) P-states (frequencies) 1500 Mhz 0.0% 1000 Mhz 100.0% Wakeups-from-idle per second : 79.7 interval: 15.0s Power usage (ACPI estimate): 14.6W (1.7 hours) Top causes for wakeups: 28.2% ( 27.0): iwl3945 16.4% ( 15.7) : extra timer interrupt 11.4% ( 10.9) : hrtimer_start_range_ns (tick_sched_timer) 10.3% ( 9.9) ubuntuone-clien : hrtimer_start_range_ns (hrtimer_wakeup) 10.3% ( 9.9) ubuntuone-syncd : hrtimer_start_range_ns (hrtimer_wakeup) 6.1% ( 5.9) : Rescheduling interrupts 4.2% ( 4.0) avahi-daemon : hrtimer_start_range_ns (hrtimer_wakeup) 3.2% ( 3.1) : hrtimer_start (tick_sched_timer) 2.2% ( 2.1) gnome-terminal : hrtimer_start_range_ns (hrtimer_wakeup) 1.3% ( 1.3) beam.smp : ep_poll (process_timeout) 1.0% ( 1.0) : ahci 0.8% ( 0.8) Xorg : queue_delayed_work (delayed_work_timer_fn) 0.6% ( 0.5) : eth0 0.6% ( 0.5) : neigh_periodic_timer (neigh_periodic_timer) 0.6% ( 0.5) events/0 : e1000_watchdog_task (e1000_watchdog) 0.6% ( 0.5) phy0 : ieee80211_associated (ieee80211_sta_timer) 0.4% ( 0.4) update-notifier : hrtimer_start_range_ns (hrtimer_wakeup) 0.3% ( 0.3) : uhci_hcd:usb2, i915, yenta 0.3% ( 0.3) gnome-panel : hrtimer_start_range_ns (hrtimer_wakeup) 0.2% ( 0.2) pdflush : wb_kupdate (wb_timer_fn) 0.2% ( 0.2) gnome-settings- : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) : add_timer (sta_info_cleanup) 0.1% ( 0.1) netbook-launche : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) : PS/2 keyboard/mouse/touchpad 0.1% ( 0.1) Xorg : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) kjournald2 : blk_add_timer (blk_rq_timed_out_timer) 0.1% ( 0.1) rsyslogd : add_timer (commit_timeout) 0.1% ( 0.1) NetworkManager : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) cron : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) kerneloops : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) heart : hrtimer_start_range_ns (hrtimer_wakeup) Suggestion: increase the VM dirty writeback time from 5.00 to 15 seconds with: echo 1500 > /proc/sys/vm/dirty_writeback_centisecs This wakes the disk up less frequently for background VM activity Suggestion: Enable SATA ALPM link power management via: echo min_power > /sys/class/scsi_host/host0/link_power_management_policy or press the S key. Suggestion: Enable laptop-mode by executing the following command: echo 5 > /proc/sys/vm/laptop_mode Recent USB suspend statistics Active Device name 0.0% USB device usb5 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb4 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb3 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb2 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb1 : EHCI Host Controller (Linux 2.6.31-14-generic ehci_hcd)
After following the suggestions above, power usage doesn't drop significantly:
PowerTOP 1.11 (C) 2007, 2008 Intel Corporation Collecting data for 15 seconds Cn Avg residency C0 (cpu running) ( 1.1%) C0 0.0ms ( 0.0%) C1 halt 0.0ms ( 0.0%) C2 0.1ms ( 0.0%) C3 12.2ms (98.9%) P-states (frequencies) 1500 Mhz 0.0% 1000 Mhz 100.0% Wakeups-from-idle per second : 81.0 interval: 15.0s Power usage (ACPI estimate): 14.0W (1.7 hours) Top causes for wakeups: 31.0% ( 30.5): iwl3945 15.1% ( 14.9) : extra timer interrupt 10.1% ( 9.9) ubuntuone-syncd : hrtimer_start_range_ns (hrtimer_wakeup) 10.1% ( 9.9) : hrtimer_start_range_ns (tick_sched_timer) 10.1% ( 9.9) ubuntuone-clien : hrtimer_start_range_ns (hrtimer_wakeup) 4.8% ( 4.7) : Rescheduling interrupts 4.8% ( 4.7) avahi-daemon : hrtimer_start_range_ns (hrtimer_wakeup) 3.5% ( 3.4) : hrtimer_start (tick_sched_timer) 2.2% ( 2.1) : ahci 2.0% ( 2.0) gnome-terminal : hrtimer_start_range_ns (hrtimer_wakeup) 1.2% ( 1.2) beam.smp : ep_poll (process_timeout) 0.8% ( 0.8) Xorg : queue_delayed_work (delayed_work_timer_fn) 0.5% ( 0.5) phy0 : ieee80211_associated (ieee80211_sta_timer) 0.5% ( 0.5) : neigh_periodic_timer (neigh_periodic_timer) 0.5% ( 0.5) : eth0 0.5% ( 0.5) events/0 : e1000_watchdog_task (e1000_watchdog) 0.4% ( 0.4) update-notifier : hrtimer_start_range_ns (hrtimer_wakeup) 0.3% ( 0.3) : uhci_hcd:usb2, i915, yenta 0.3% ( 0.3) gnome-panel : hrtimer_start_range_ns (hrtimer_wakeup) 0.2% ( 0.2) gnome-settings- : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) Xorg : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) : add_timer (sta_info_cleanup) 0.1% ( 0.1) kerneloops : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) NetworkManager : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) netbook-launche : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) : PS/2 keyboard/mouse/touchpad 0.1% ( 0.1) pdflush : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) pdflush : wb_kupdate (wb_timer_fn) 0.1% ( 0.1) heart : hrtimer_start_range_ns (hrtimer_wakeup) 0.1% ( 0.1) rsyslogd : add_timer (commit_timeout) Recent USB suspend statistics Active Device name 0.0% USB device usb5 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb4 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb3 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb2 : UHCI Host Controller (Linux 2.6.31-14-generic uhci_hcd) 0.0% USB device usb1 : EHCI Host Controller (Linux 2.6.31-14-generic ehci_hcd)
Kernel modules as loaded after the install:
$ lsmod Module Size Used by cbc 3516 162 aes_i586 8124 163 aes_generic 27484 1 aes_i586 binfmt_misc 8356 1 ppdev 6688 0 snd_hda_codec_analog 59292 1 lp 8964 0 parport 35340 2 ppdev,lp snd_hda_intel 26920 2 snd_hda_codec 75708 2 snd_hda_codec_analog,snd_hda_intel snd_hwdep 7200 1 snd_hda_codec snd_pcm_oss 37920 0 snd_mixer_oss 16028 1 snd_pcm_oss snd_pcm 75296 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_seq_dummy 2656 0 snd_seq_oss 28576 0 pcmcia 36808 0 arc4 1660 2 snd_seq_midi 6432 0 snd_rawmidi 22208 1 snd_seq_midi ecb 2524 3 yenta_socket 24200 1 snd_seq_midi_event 6940 2 snd_seq_oss,snd_seq_midi iwl3945 77212 0 rsrc_nonstatic 11644 1 yenta_socket psmouse 56180 0 sdhci_pci 7100 0 snd_seq 50224 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event iwlcore 112508 1 iwl3945 pcmcia_core 35792 3 pcmcia,yenta_socket,rsrc_nonstatic mac80211 181236 2 iwl3945,iwlcore thinkpad_acpi 67108 0 nvram 7528 1 thinkpad_acpi serio_raw 5280 0 snd_timer 22276 2 snd_pcm,snd_seq snd_seq_device 6920 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq sdhci 17472 1 sdhci_pci dm_crypt 12928 0 led_class 4096 4 iwl3945,iwlcore,thinkpad_acpi,sdhci snd 59204 16 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device iptable_filter 3100 0 soundcore 7264 1 snd cfg80211 93052 3 iwl3945,iwlcore,mac80211 snd_page_alloc 9156 2 snd_hda_intel,snd_pcm ip_tables 11692 1 iptable_filter x_tables 16544 1 ip_tables fbcon 36640 72 tileblit 2460 1 fbcon font 8124 1 fbcon bitblit 5372 1 fbcon softcursor 1756 1 bitblit ohci1394 29900 0 ieee1394 86596 1 ohci1394 e1000e 122124 0 i915 221064 4 drm 159584 4 i915 i2c_algo_bit 5760 1 i915 intel_agp 27484 2 i915 agpgart 34988 2 drm,intel_agp video 19380 1 i915 output 2780 1 video